Malicious PDF — malware analysis report

Static analysis result for SHA-256 f447fea9569a15a3…

MALICIOUS

PDF

352.1 KB Created: 2015-08-25 10:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.2.4 (via Qt 4.8.6)
MD5: 1d85cdb336c6c5ea91bfe36d1893e302 SHA-1: 7cc477db6d0a0a920d51e3abde668323c133d679 SHA-256: f447fea9569a15a30a908f782a5b65e1fb47fcaa1623873f1bbd4312fb513c07
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector infrastructure at botcraftman.ru. This indicates an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious URL is sufficient evidence for the attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D1%81%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%BF%D1%80%D0%B5%D0%B7%D0%B5%D0%BD%D1%82%D0%B0%D1%86%D0%B8%D1%8E+%D0%BD%D0%B0+%D1%82%D0%B5%D0%BC%D1%83+%D1%87%D1%83%D0%BC%D0%B0&charset=utf-8
    • http://img1.liveinternet.ru/images/attach/c/6//4727/4727235_nfs__undercover__skachat_.pdf
    • http://img1.liveinternet.ru/images/attach/c/6//4725/4725281_counter__strike__nexon_.pdf
    • http://img0.liveinternet.ru/images/attach/c/6//4726/4726147_simulyatoruy__svidaniy__na_.pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000534cf.bin
2696dffa9591ccb9d9d24d3af718efe215a732eedc6913b291c4835fba5c3767		 pdf-font-stream PDF embedded font (sfnt) at offset 0x534CF 9844 bytes
font_01_sfnt_off00054f7a.bin
356185a7bb1be87d0bb8dfab3d2fedbbcd3470ee35f36b0a41ac48b90b23615e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F7A 16264 bytes

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